Sample concentrator filter

Details Sample concentrator filter Sample concentrator filter

1992-03-06

1993-11-16

Hart, Charles

Gas separation: apparatus

Chromatography type apparatus

95 82, 73 2341, B01D 5304

Patent

active

052619370

ABSTRACT:
A filter for preventing foam and debris from accumulation on the trap used in sample concentration apparatus is disclosed. The filter is preferably a sintered metal frit removably inserted in the concentrator inlet on a sparge vessel. The filter also serves as a check valve for preventing water vapor or residual analytes in the sparge vessel from contaminating dry gas or other external samples which pass through the concentrator inlet.

REFERENCES:
patent: 1652309 (1927-12-01), Kingdon
patent: 2800977 (1957-07-01), Stewart
patent: 2920716 (1960-06-01), Shada
patent: 3940994 (1976-03-01), Klee et al.
patent: 4256470 (1981-03-01), Zajicek et al.
patent: 4526593 (1985-07-01), Myerson
"Analysis of Volatile Organic Chemicals in Water Using the Ion Trap Detector.TM. (ITD.TM.)," by Jerry Thoma, Environmental Health Laboratories.
Volatile Organics Analysis: Building a State-of-the-Art Purge and Trap GC/Ms System, Reproduced from Alltech Environmental Update.
A Fully Automated Purge-and-Trap System for Analyzing Volatile Organics in Drinking Water, by J. S. Ho, P. Hodakievic, and T. A. Bellar.
The Determination of Volatile Organic Compounds from EPA Method 524.2 using Purge-and-Trap Capillary Gas Chromatography, ECD, and FID.
The analysis of volatile organics in drinking water with an OI 4460A purge and trap and an HP GC/Ms system, by Linda Doherty.
The Analysis of Volatile Organics in Drinking Water with OI 4460A Purge and Trap and an HP GC/MS System.
New 105m, Fused Silica HOCOL.TM. Column Provides Maximum Resolution of Volatile Compounds in Drinking Water, Reproduced from The Supelco Reporter, vol. IX, No. 4.
An Automated Purge-and-Trap System for Analyzing Volatile Organic Compounds in Drinking Water, by Allen K. Vickers.
Determination of Volatile Organics in Drinking Water with USEPA Method 524,2 and the the Ion Trap Detector.
Determination of Purgeable Halocarbons and Aromatics by Photoionization Hall Electrolytic Conductivity Detectors Connected in Series.

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